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No. 607,672. Patented July l9, I898. T. VON ZWEIGBERGK.

00 N T R0 L L E R (Application filed Apr. 8, 1898.)

3 Sheets-Sheot I.

, (No Model.)

No. 607.672.. Patented July l9, I898. T. VON ZWEIGBERGK.

CONTROLLER.

(Application filed Apr. 8, 1898.) (N0 Modal; 3 Sheets-Sheet 2.

WEW W- No. 607,672. Patented July I9, 1898.

T. VON ZWEIGBERGK.

CONTROLLER.

(Application filed Apr. 8, 1898.) QNo Model.) 3 Sheets-Sheo! 3.

It wove/Zn m e a. M

if: Sufi-MC 5 LINITED STATES PATENT OFFICE.

llllORS iT EN VON ZWEIGBERGK, OF CLEVELAND, OlllO, ASSIGNOR TO THE VALKER COMPANY, OF SAME PLACE.

CONTROLLER.

SPEGIFZCATION forming part of Letters Patent No. 607,672, dated duly 19, 1898.

Application filed April 8, 1898.

T0 (02% 107mm it may concern:

Be it known that I, Tnonsrnn voN ZwnicnnnoK, a subject of the King of Sweden and Norway, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented a certain new and useful Improvement in Controllers, of which the following is atull, clear, and exact description, reference being had to the accompanying drawings.

My invention is concerned with a blow-out for controllers, composed of a series of coils standing in the space between the contacts and adapted to be connected in a circuit and throw their lines of force directly through the contacts.

The object of the invention is to provide such a blow-out which shall be simple and economical in construction and durable and edicient in service.

To that end the invention consists of the combinations of parts hereinafter described, and definitelyenumerated in the claims.

The drawings clearly illustrate my invention.

Figure l is a front elevation of a controller embodying the same, and Fig. 2 is a side elevation of the same, looking from the left of Fig. 1, a portion of the cover being broken away in each of these figures. Fig. 5 is a horizontal section of the controller on the line 3 3 of Fig. 1. Fig. i is a side elevation, on a larger scale than the preceding figures, of the blow-out, its supports and connections. Fig. 5 is a plan on a still larger scale of one of the blow-out coils, the upper halt of its inclosing box being removed. Fig. (3 is a side elevation of such coil and its box complete, and Fig. 7 is a vertical central section of the same. Fig. 8 is a diagram showing the development of the controller, the contact-fingers, motors, resistance, blow-out, and connections.

The drawings show a controller-shaft 13, which is mounted in suitable bearings c in the controller-frame C and has the usual opcrating-handle l). The usual indicator-wheel l) on this shaft and its roller (not shown) retain the shaft in proper position. The contact-segments on the shaft are designated (2, with suitable exponents, and the contact-fingers D.

The blow-out coils are placed between the Serial No. 676,906. (No model.)

different contact-fingers, inclosed in suitable boxes G, tovbe hereinafter described. The coils are solenoids and consist of a ribbon or ribbons of wire g,wound with interposed strips of asbestos g into a spiral of preferably the elliptical form shown. The ends of the wire ribbon project a suitable distance and are properly wrapped with insulatingcovers and insulated from the rest of the coil by pieces of mica For ease of manipulation in the heavier types of controllers I prefer to make the coil of two or three thin ribbons of wire instead of one thick one. The drawings show two such ribbons. They are placed in contact with each other and wound just as if one ribbon; but where the ends pass outward from the innermost eoili. 6., where they lie against the mica g theyare side by side. This permits the thickness of the inclosing boX to be kept down, and thus allows room for the contacts desired without rendering the controller abnormally high.

The inclosing boxes G consist 01": two plates and 1 ,0 3 the shape shown in the drawings, having in their )lOXllllZtlEQ faces open-ended recesses {1 of the general elliptical shape shown. The bottoms of these recesses are lined with plates of mica g and between these plates there is just sutficient space to snugly receive the coil of wire ribbon. One of the boxes has the additional recess 9 for the reception of the ends of the coil above the mica strip 9 After the coil has been inserted in the box the lat er is fastened together by glue and dowel-pins g and a suitably-shaped plug 9 of insulating material is placed in a portion of the otherwise open end of the box. Each box is secured to an up right wood strip C6 by means of a suitable bracket G "his bracket lies against the cc ge of the box Gr, as shown, and has arms G G, which take over onto the upper and lower surface of the box and are secured thereto by one of the dowel-pins 9 A screw Gr furnishes the means for securing this bracket on the strip G This strip is itself carried by wooden block K, which is supported by the controller-frame and preferably carries the contactdingers. The portion of the box end otherwise open abuts against this block K, while the projecting block 9- bears against the side of the block K. Thus the boxes until in final position are accessible at the corner where the projecting ends of the coils are. These ends may therefore be inspected and seen to be all right at the time the boxes are installed, after which the block K closes their open ends. The block K at the same time forms, with the block g a guide and brace for the boxes.

The strip G has slots or orifices G therein, through which project the ends of the ribbon or ribbons g. These ends are bent in opposite directions, and those projecting toward each other from some of the proximate boxes are secured directly together by suitable metallic sleeves g.

In heavy work, where the currents are large, if the ribbons were all connected together in series they would have to be so large in order to keep down the resistance that they would be unwieldy and difficult of manipulation. I therefore connect a few of the coils in series in separate sets and connect the sets in parallel, thus cuttin g down the size of the ribbons required in each box. In order to satisfactorily accomplish this and make a simple connection, I screw to the outer face of the strip of Wood G near its edges, a pair of copper bars H and II and connect one of the terminals of each set of coils to one bar and the other terminal to the other bar. In the controller illustrated in the drawings there are ten contact-fingers and ten coils,and the three upper coils constitute one set, the four lower coils another set, and the three intermediate coils another set. The conductors leading to and from the blow-out are connected one at the upper end of the bar Hand the other at the lower end of the bar II. It will thus be seen that the three sets are in parallel,wherefore each set has to carry but a third of the total amperage. Hence the ribbons need be only one-third of the size which they would have to be if the coils were all in series,while the bars H and H, which do not have to be bent or twisted, may conveniently be of any size desired.

A protecting-strip L of wood is screwed to the block K and projects over the bars H H and the ribbons g, having a groove Z, in which these parts stand. Thus not only are the coils themselves thoroughly boxed in and protected, but the conductors leading to them are likewise, while these conductors are entirely accessible and may be easily inspected, though the connections to them are at the back of the controller and out of the way.

The coils, or, as I describe them collectively, the solenoid, are preferably connected so that they are in the main line when there is any resistance in that line, thus furnishing part of the governing resistance; but when the controller is in its last series or parallel position the solenoid is thrown onto a shuntcircuit, so as not to cut down the effective work of the current. This connection is illustrated in the diagram, Fig. 8, where a seriesparallel controller with a resistance and two motors areillustrated. In practice asuitable reversin -switch would be interposed between the controller and the motors; but it is here omitted for simplicity. Referring to the diagram, it will be seen that in series position'No. l the current would come from the trolley via the conductor T, contact-plates e e", to the conductor R, and through the whole resistance and through the solenoid to conductor S, to conductor A, through motor No. 1 to conductor F, to contact-plates e 6 to conductor A through motor No. 2 and to the ground. In positions 2 and 3 portions of the resistance will be out out. In passing from position 3 to position 4 the contact-- finger of the terminal S would first contact with the plate 6 This would cut out that portion of the resistance which was in circuit in position No. 3, and would cut out the solenoid also, the current passing from the trolley to contact-plates c c and direct to the armature of motor No. 1. A little further movement, however, of the controller in passing to position No. 4 brings the terminal of the conductor B into engagement with the plate 6. This forms a shunt-circuit from the trolley to the armature of motor No. 1 through the solenoid and furnishes enough current to the solenoid to cause the proper lines of force. The fifth and sixth parallel positions correspond, as far as the solenoid is concerned, to the second and third positions, and the seventh parallel position leaves the solenoid connected up as in series position No. at.

Having described my invention, I claim- 1. In acontroller, in combination,the strip G the metallic bars H and H, boxes carried by said strip, coils g within each box, some of said coils being connected together in series in different sets and the sets having one of their terminals connected to the bar Hand the other terminal to the bar H, substantially as described.

2. In combination, the strip G boxes G carried thereby, a metallic coil g within each box, slots G through said strip near the boxes, through which slots the ends of said coils g extend, the bars H and II secured to said strip G on either side of the ends of said coils, the ends of the coils in some of the proximate boxes being connected together, whereby the coils are connected in sets, said sets having one of their terminals connected to the bar H and the other to the bar II, and a protecting-strip L which covers said bars and the ends of the coils, substantially as described.

3. In acontroller, in combination, the block K, the strip G secured thereto, the boxes G carried by said strip, coils in said boxes, the slots G through said strip near said boxes, the ends of said coils projecting through said slots, said coils being connected alongside of said strip G and a protecting-strip L secured to said block K and extending over the ends of the coil g, substantially as described.

.4. In a controller, in combination, a suitably-supported strip G, a plurality of boxes G, brackets G secured to the boxes and to the strip G and thus supporting the boxes, and coils 9 contained in said boxes, substantially as described.

5. In a controller, in combination, a suitable strip G a plurality of boxes G, each containing a coil, a bracket G having arms G G which take over onto the top and bottom of said box, said brackets being secured to said strip G, slots in said strip, the ends of said coils projecting through said slots, substantially as described.

6. In a controller, in combination, the block K, a plurality of boxes G suitably secured in proximity to said block, and abutting against it at their rear, each of said boxes consisting of a recessed plate and a cover therefor, said recess being open at the rear, a block g" secured in said open end and closing part of it and prcj ectin g therefrom and bearingagainst the block Ii on its side whereby the block K forms a guide for said box and also closes its otherwise open end, substantially as described.

7. In a controller, in combination, a suitably-supported vertical strip G having slots through it, a plurality of horizontal boxes G carried by said strip on one side and near said slots, coils of metallic ribbon within said boxes having their ends passing through said slots and connected up on the other side of said strip, substantially as described.

8. A suitably-protected solenoid-coil for a controller blow-out consisting of a spirallywonnd ribbon of metal g interposed insulating material two recessed plates g and embracing the coil, plates of mica or similar material g' on each side of the coil, pins g connecting the two plates together, substantially as described.

9. A solenoidcoil, for a controller blow-out,

consisting of a plurality of ribbons of metal in contact with each other and wound as one ribbon into a spiral, with insulating material 9 interposed between the different turns of the spiral, and a box of insulating material inclosing said coil, and having an opening through which the ends of the coil project the ends of said ribbons from the innermost coil of the spiral lying beside each other as shown when passing over the spiral, whereby the necessary thickness of the inclosing box is reduced, substantially as described.

10. In a controller, in combination, a suit ably-journaled controller-shaft, contact-segments carried thereby, the supporting block. or strip K, contact-fingers carried thereby the strip G secured to said block K, the boxes Gr containing coils, the brackets G securing said boxes to said strip G the coils g within said boxes having ends projecting through slots G in the strip G and suitably connected, substantially as described.

11. The combination, with a seriesconnected governing resistance and a blow-out, of a controller which governs by successively cutting out resistance and in which there are contact-fingers having conductors leading to different portions of the governing resistance, and a line returning from the governing resistance and passing through the blow-out to a contact-linger, and a contact-finger having a line joining this last-mentioned line between the blow-out and the resistance, the controller having contact-plates into connection with which the contact-fingers come at different times, the last-mentioned contactfinger coming into contact with its plate at. ter the contact-finger connected through the blow-out coil to the resistance has contacted with its plate, substantially as described.

In testimony whereof I hereunto aliix my signature in the presence of two witnesses.

TllOilS'iEN VON ZlYEIGBERGK.

Witnesses:

PHILIP E. KxowLToN, ALBERT II. Barns. 

